gtk2/testsuite/gtk/ui/scale1.ui

<!-- test valid scale custom tags -->
<interface>
  <object class="GtkScale">
    <marks>
      <mark translatable="yes" comments="blargh" context="none" value="0.1" position="top">text</mark>
      <mark value="0.9"/>
    </marks>
  </object>
</interface>